country = ['中国', '美国', '法国', '英国']
print(f'raw format {country}')
print(f'sorted format {sorted(country)}')
print(f'raw format {country}')

new = sorted(country)
new.reverse()
print(f'sorted reverse {new}')

print(f'raw format {country}')

country.reverse()
print(f'reverse {country}')

country.reverse()
print(f'discovery {country}')

country.sort();
print(f'sort format {country}')
